CCAE = American English from the Cambridge International Corpus

附相关来源 (摘自The Cambridge Guide to English Usage)：

Many kinds of resource have been brought to bear on the style and usage questions raised. The Cambridge Guide to English Usage is the first of its kind to make regular use of large databases (corpora) of computerized texts as primary sources of current English. Numerous examples of British usage have come from the 100 million word British National Corpus (see BNC); and of American usage from a subset of 140 million words of American English from the Cambridge International Corpus (see CCAE).